Fascinating article. I am reminded of things my grandmother said about breaking into the field of physics (and later really helping greatly expand the field of astrophysics). I am also reminded of women complaining about the problems with trying to raise a family and get tenure as science professors today, and conclude that in many ways my grandmother had it easy.
So it sounds like Gwen's experience wasn't unique. It may be that we are actually becoming more rather than less hostile towards women breaking into male-dominated industries.
I think we are more hostile to women now than in the past if only because we say we aren't hostile at all and in the past women and minorities knew they needed to fight their way in. If you know you're up for a fight vs just thinking you're evaluating possibilities you're approach is going to be different.
Basically, since the younger generation has bought into the idea that sexism/racism is on its way out they are more likely to believe someone when they say - you can't be any good. And why be persistent if maybe you aren't actually any good?
So it sounds like Gwen's experience wasn't unique. It may be that we are actually becoming more rather than less hostile towards women breaking into male-dominated industries.